Anesthesia-mask.



G. F. RICHTER.

ANESTHBSIA MASK.

APPLIOATION FILED 00T.17, 1910. v

1,070,986. Patntea Aug. 19, 1913.

2 SHBETS-SHEET 1.

G. F. RICHTER.

ANESTHESIA MASK. APPLICATION FILED 01111.17, 1910.

Patented Aug. 19, 1913.

2 SHEETS-SHEET 2.

COLUMBIA PLANQGRAPH :zO-.WASHINGTON` n. c.

TED SATES PATENT GUSTAV F. RICHTER, 0F NEW YORK, N. Y., ASSIGNOR TO WILLIAM H. HAMILTON, 0F BROOKLYN, NEW YORK.

ANESTHESIA-IVIASK.

Speccaton of Letters Patent.

Patented Aug. 19,1913.

Application filed October 17, 1910. Serial No. 587,414.

T 0 all 'whom t may concern Be it known that I, GUSTAV F. RICHTER, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New vYork, have invented certain new and useful Improvements in Anesthesia-Masks, of which the following is a specification, accompanied by drawings.

This invention is a mask for administering anesthetics such as chloroform and consists in an improved construction of such devices whereby new and important results are obtained as hereinafter disclosed.

The objects of the invention are particularly to provide a collapsible mask of enlarged interior capacity with relation to the size of its rim portion which fits upon the face of the patient, whereby the saturated web of muslin will be held safely at some distance from the patients nose and lips and whereby also an enlarged area of muslin will be provided for the passage of air and for the evaporative effect.

The objects of the invention include provisions against the drainage of the liquid onto the outside of t-he rim where it would come in cont-act with the patients skin and produce burns and also certain other improved features of durability, convenience and compact-ness, as hereinafter made apparent to those skilled in this art.

Figure 1 is a top plan View of a mask embodying the invention with the frame in extended position; Fig. 2 is an end elevation of Fig. l; Fig. 3 is a top plan view of the mask in folded position with the clamp ring removed; Fig. ll is a transverse sectional view on the line Tlf-IV of Fig. 3, looking in the direction of the arrows; Fig. 5 is a longitudinal sectional view on the line VV of Fig. l, looking in the direction of the arrows with the covering material applied to the mask; Fig. 6 is an end elevation of the mask in partially folded position;

Fig. 7 is a detail transverse sectional view taken through the rim and partly broken away; Fig. 8 is a top plan view of a modication of the device with the frame in eX- tended position; Fig. 9 is a transverse sectional view of Fig. S on the line IX-IX looking in the direction of the arrows; Fig. 10 is a detail longitudinal sectional view partly broken away on the line X-X of Fig. 8 looking in the direction of the arrows.

A represents the rim of the mask, which is made of metal of oval or oblong shape with a trough-shaped cross-section and suitably curved so that it will fit snugly over the nose and mouth of the human face as indicated by the dotted lines at B in Fig. 5. The interior margin C of the rim portion is conveniently somewhat higher than the outer margin D and preferably of such height as to enable the web-supporting frame to be jointed thereto in the special manner hereinafter pointed out.

The web-supporting frame comprises a pair of opposed longitudinal spreader members, marked E and F respectively, which are conveniently formed of wire and are syimnetrical duplicates of each other. Each spreader member is lineally somewhat longer than one-half of the periphery of the rim measured around its inner margin C, that is to say, longer than the interior part or limb of the oval rim which lies all on one side of its major axis. Each spreader is also bent or curved, in different planes, and so as to form the two bulges O near each end of the limb and the ends of each member are pivoted to the rim C at points intermediate of the ends of the limbs. This arrangement provides that when the spreader member E is collapsed, as shown in Figs. 3 and 4, it will lie adjacent to the limb opposite that to which it is itself jointed and will conform to the general curvature thereof, being substantially parallel therewith for the full length of the opposite limb extending around and beyond the ends of the oval frame to its points of pivotal connection, marked H. The opposing member F occupies a similar position with respect to its opposite limb when it is similarlyV collapsed. When these two spreaders are moved into their raised position, they lock together at their central point, as shown in Figs. l and 2, and the web L placed over the frame is held out by the bulges, being thereby caused to be more truly dome-shaped than would otherwise be the case if the said bulges were not present.

The spreader members are bail-jointed to the rim C, that is to say, the rim is perforated as indicated at K and the ends of the spreader members are curled into eye-form H and inserted in the perforations forming a pivotal joint which is quite the same as the bail-joint found in the bail handles of ordinary metallic pails and buckets. style of joint, as I have found, possesses the This peculiar property of draining all ot the liquid that runs down from the saturated muslin web into the inside of the trough shaped rim instead of upon the outside surface thereof where it would, ot' course, come in contact with the patients iiace. This style of joint, therefore, forms a substitute for other more complicated and special. constructions designed to produce the same ettect and inasmuch as the said style of joint can be used with the same effect in other terms of chloro'torm masks, tor instance the non-collapsible forms, it will be observed that the saine constitutes an independentfeature of this invention and it is, therefore, made the subject of special claims herein.

The two opposing spreader members, E, F, formed and bail-jointed to a limb ot the oval-rim as above described, are preferably crossed over each other at their common central point where they lock together, as shown most clearly in Figs. l and 5, but it desired they may be lapped over each other without crossing, as shown in Fig. 8. ln both cases the wire of which the members are formed is crimped to term retaining notches which will allow the members to be snapped together so as to be thereby mutually supported in their raised position. in the case of the crossed members the central portions are crimped at P and Q so that the crimped portion of one will cooperate with the smooth port-ion of the other to form a detent interlocking connection. n this form one spreader member serves as a stop to the other member, preventing outward or upward movement beyond the intended raised position.

ln the term of Fig. S the longitudinal spreader member S is crimped in the middle to term an upward projection V and the other member is crimped to form the recesses U, both styles of crimping being adapted to interlock, as clearly shown in Fig. S. @t the two terms the first is prei'erred because ot the limiting etfect which the one has upon the pivotal movement of the other.

llVhile the t-wo longitudinal members may in some cases be sutlicient of themselves properly to support the saturated web, it is preferred to provide also an additional transverse spreader member G likewise bailjointed to the rim portion C, This member may also be formed of wire the ends ot which. are curled into eyes J and hooked into pertorations K in the rim at or about the ends ot the minor axis et' the oval. This member may be curved in one plane only so that it is arch-shaped. It is of suilicient height to snap into the compound notch formed by the inside of the crimps P and Q in the term ot' Fig. 5 or in the corresponding notch formed by the crimps U and V in the -torni of Fig. S. In each case the transverse member provides additional, support and rigidity to the longitudinal members. In collapsing the mask the transverse member is First uri-snapped and folded into the interior et the oval rim, as shown in Figs. 3 and et, wherein it lies entirely within the rim portion C, and the longitudinal members are next uil-snapped and rcollapsed and folded against the transverse member in the obvious manner.

The collapsible nature ot the web iframe prescribes that the bail-joint ot the trans verse member shall be termed by inserting its ends through the pertorations in the rim from the inside to the outside, whereas the joints et the longitudinal members are formed by passing their ends H through the perforations in the opposite direction. Both terms et bail-joint possess the advantage in respect of chaining` that has been above described, but the exterior joint, such as used for the longitudinal members, is preferred. The portions ot all the bail-joints that project outside otl the rim C also serve as detent shoulders for assisting in maintaining the clamp ring E in position. rlhis ring, which has a handle E2, is a separate part shaped 'to conform to the interior ot the trough-shaped rim and adapted to be placed over the websupporting 'frame so as to hold the web neatly stretched thereon. ts construction and size permit et its being pressed over the knuckles ot' the projecting bail-joints as indicated in Fig. Y, so that it will snap home to its position in the bottom of the trough. The ring itself being flexible and the projecting parts or knuckles ot the joints beingl on the ends of the somewhat flexible bails, provides for holding the ring firmly in position so that it can be readily removed in the obvious manner when necessary. The enn gagement that is thus produced between the ring and the troughsshaped rim is sutliciently solid to enable the handle E2 of the ring to be used as a handle for the entire device so that a corresponding handle is not necessary upon the rim.

Having described my invention, claim the following:

l. An anesthesia. mask having an oblong rim suitable to lit over the mouth and nose and a collapsible web-supporting trame comprising a pair ot spreader members each pivotcd to one limb et the rim intern'iediate ot' the ends of said limb with its middle portion adapted to lie adjacent and generally parallel with the opposite limb oit said rim when collapsed.

2. Bin anesthesia mask having an oblong rim suitable to iit over the month and nose,

and a collapsible web-supporting iframe composed ot spreader members each adapted to lie adjacent and generally parallel to one of the limbs ot said rim trom end to end lthereof and having its ends pivotally connected to the opposite limb at points intermediate of the ends thereof.

3. An anesthesia mask having an oblong rim suitable for tting over the mouth and nose, and a collapsible web-supporting frame composed of spreader members each member being of greater length than half the periphery of the inside of said rim and pivoted to the rim on one side of the major axis thereof and being adapted when collapsed to lie adjacent and generally parallel to the opposite inner limb of the rim and also to extend around and past the ends of the rim opening, whereby the outwardly projecting web-supporting portions, O, are provided near the ends of the oblong rim.

et. An anesthesia mask comprising an oblong rim and web-supporting spreader members pivoted to the rim respectively at opposite sides of its major axis, said members lying compact-ly within and adjacent. the inner contour of the rim when folded and engaging at the middle when opened and their end portions being bulged outward so as to increase the interior capacity of the mask,

5. An anesthesia mask comprising a trough-shaped rim to lit over the mouth and nose and a web-supporting frame formed of wire-spreader members having bail-joint connections with the said rim, and being thereby adapted to drain liquid from a wel: into the inside of the trough-shaped rim.

6. An anesthesia mask comprising a suitable trough-shaped rim and a collapsible web-supporting frame formed of t-wo opposing spreader members provided with bailjoint connections to perforations in the inner wall of said rim.

7. An anesthesia mask comprising a suitable oblong rim, trough-shaped in cross section, and a collapsible web-supporting frame formed of opposing spreader members, each of said members being bail-jointed by its ends to the inner margin of said rim, and on the same side of the major axis of the rim, and the two said members being formed to engage with each other in the opened position.

S. An anesthesia mask comprising a trough-shaped rim having a collapsible frame formed of web-supporting members, the ends of which are hooked through perforations in the inner edge of the rim and a clamp ring having detent engagement with the outwardly projecting portions of the hooked ends.

9. An anesthesia mask having a rim, a collapsible frame consisting of two opposing web-supporting members pivotally supported upon the rim, the said members each forming an abutment stop for the other to limit the expanding movement thereof.

10. An anesthesia mask having a rim, a collapsible frame consisting of two opposing web-supporting spreader members pivotall,7 connected by their ends to opposite sides of the said rim and each crossing over and under the other at their middle portions to prevent the separation of said members.

11. An anesthesia mask comprising an oval rim and a web-supporting frame ccnsisting of two opposing longitudinal members respectively pivoted to the opposite limbs of the rim, and a transverse member, all of said members intersecting at the common point when open and the transverse member being adapted for detent locking engagement with both of said longitudinal members.

12. An anesthesia mask comprising a trough-shaped rim A, the opposing longitudinal spreader members E, F, provided with the bulges O and bail-jointed to the inner margin of the rim, substantially as described.

13. An anesthesia mask comprising a rim and opposed web-supporting spreader members, both ends of each member beingpivoted to the rim at the same side of the major axis thereof and the two members being thus connected to the rim respectively at opposite sides of said major axis, said members having their end portions bulged outward as shown at O.

14. An anesthesia mask comprising an oblong rim and web-supporting spreader members pivoted to the rim respectively at opposite sides of its major axis and at points intermediate the ends of the internal opening of the rim, the end portions of the members being outcurved beyond their points of pivotal attachment so that at the end of the device the web will be held out by pressure appli-ed at two points at opposite sides of the major axis.

15. An anesthesia mask comprising an oblong rim and web-supporting spreader members pivoted to the rim respectively at opposite sides of its major axis and adapted when opened to engage each other approximately at the middle, the two end portions of each member being outcnrved in different planes relatively to each other, whereby the web will be supported substantially along diagonal lines and held out at the ends at two points at opposite sides of' the major axis so that the end portions of the cavity are made both wide and deep.A

ln testimony whereof, I have signed this specification in the presence of two witnesses.

GUSTAV F. R101-ITER. Vitnesses:

Louis A. Gnrrz. MARY WALLACE.

Copies of this patent may be obtained for ve cents each, by addressing the Gommissoner of Patents, Washington, I). C. 

